Writing to files

I am writing a simple program to use VBA to write to a file.

   Dim FileNum As Integer
    Dim theFile As String
    Dim fName
    
    fName = "c:\temp\testFile.txt"
    FileNum = FreeFile()
    
    Open theFile For Output As #FileNum
    
    Write #FileNum, "Writing.."
    Close #FileNum

When I try to run this, I get
Run time error 75 Path/File Access error

There are no access issues, this is just on my local directory. The file does not exist. Any help would be much appreciated.